Error-Correcting Code Definition/Meaning:
A code that is designed for channel coding, i.e. for
encoding information so that a decoder can correct, with a high probability of
success, any errors caused in the signal by an intervening noisy channel.
Error-correcting codes may be block codes or
convolution codes, and in
either case are employed in a forward error-correction system. The most common
error-correcting block codes are the Hamming codes, Bose-Chandhuri
Hocquenghem (BCH) codes, the Reed-Solomon (RS) codes, the
simplex codes, and the Golay (23, 12) code. Since errors may be corrected by detecting them and
requesting retransmission, the process of error correction is sometimes taken to
include backward error-correction systems and, hence, error-detecting codes.
See also Shannon's model,
coding theory,
coding bounds.
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